I haven't worked fast food since high school over 30 years ago but when I did none of that stuff ever bothered me because all burgers were just buns and meat until we made them whatever they were supposed to be. So honestly making something like with no ketchup, no mayo, no whatever was actually easier. It was just less stuff we had to put on there.
Adding "extra" onion or whatever was easy because you were already putting stuff on there anyway. i pretty much always put too many toppings on there anyway. I was very generous with toppings.
PSN ID: sled_dogs76
60" Pioneer Kuro Elite PRO151FD, Yamaha RX-V3900 A/V Receiver, Oppo DV983-H player. Coming soon: 2 Seaton Submersives from Mark Seaton